Originally Posted by uber e36
When rebuilding, do you always need to swap to new, larger, pistons?
Can't you just replace bearings, seals, etc?
Not always. It's really dependant on the wear in the cylinder. In my case it was quite severe so I went as big as I could.
1987 325is(Midnight Tuning Tuned OBD I S52
) - Current Summer Car
2013 Ford Edge - Daily Driver
1985 318i - 1st Car (started it all)